<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
	</head>
	<body>
		<script type="text/javascript">
			var a=[1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54];
			var b=Array(13);
			for(var i=0;i<13;i++){
				var a1=Math.ceil((Math.random()*a.length)-1);
				b[i]=a[parseInt(a1)];
				//交集：a[i]=b[i]a[i]
			}
			
			for(var i in b){
				document.write(b[i]+"<br />");
			}
		</script>
	</body>
</html>
